CN103464562B - Cavity low-internal-pressure manufacturing process - Google Patents
Cavity low-internal-pressure manufacturing process Download PDFInfo
- Publication number
- CN103464562B CN103464562B CN201310418901.8A CN201310418901A CN103464562B CN 103464562 B CN103464562 B CN 103464562B CN 201310418901 A CN201310418901 A CN 201310418901A CN 103464562 B CN103464562 B CN 103464562B
- Authority
- CN
- China
- Prior art keywords
- cavity
- clamping head
- blank
- pressure
- matched moulds
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The present invention relates to a kind of cavity low-internal-pressure manufacturing process, the method is as follows: be put on the counterdie of shaping dies by cavity blank, controls matched moulds press and the two ends of cavity blank are clamped by clamping head and lower clamping head; Seal head is inserted the two ends of cavity blank; By the flow-guiding channel of seal head to injection liquid body medium in cavity blank; The patrix controlling matched moulds press is descending to the pressurization of cavity blank, makes the medium pressure liquid in cavity according to the technological requirement change of setting, until cavity part is shaped in pressure process; Extract seal head out, exudate body medium; Control matched moulds press and make patrix, upper clamping head and lower clamping head backhaul, take out cavity part.The present invention requires lower to hydraulic component, and equipment investment is few, and stable performance.
Description
Technical field
The invention belongs to Hydroforming field, relate to a kind of cavity low-internal-pressure manufacturing process.
Background technology
Internal high pressure forming is a kind of cavity part forming technology be rapidly developed in recent years, and the advantage of internal high pressure forming is the cavity type parts of variable cross-section shape and size of can being shaped, and especially perimeter of section changes little pipe part, is more suitable for internal high pressure forming.Concrete shaping process is as follows:
------(preform)------------pipe two ends seal, and------------in pipe,------------------medium in releasing tube------takes out part to part forming to the pressurize of whole shaping dies matched moulds to pipe, completes a working cycles to open sealing in medium pressurization to be filled with medium in pipe.
Cavity part is shaped and mostly adopts internal high pressure forming technique at present, the general principle of internal high pressure forming makes blank with tubing, by tubing inside applying superhigh pressure liquid and axial afterburning feed supplement, pipe being pressed into mold cavity makes it be configured as required workpiece, basic process initial pipe fitting is put into mold cavity (shape of this die cavity is consistent with the product design of required manufacture) counterdie, then under press effect, patrix is descending realizes matched moulds, finally pressure in inside pipe fitting applies, simultaneously apply axial force at the two ends drift of pipe fitting along the axis of pipe fitting, so tubing under the comprehensive function of interior pressure and axial force to mold cavity flowing until the pipe fitting be shaped and die cavity contact internal walls, finally be configured as cavity shape.But internal high pressure forming needs high-voltage power supply, high-voltage power supply requires very high to hydraulic component and pipeline, internal high pressure forming also needs matched moulds press in addition, clamping pressure requires also very high, therefore matched moulds press correlated parts not only requires that enough intensity but also press entirety will have enough structural rigidities, to ensure that, in Internal High Pressure Forming, patrix can not float.This just causes internal high pressure forming equipment manufacturing cost expensive, and the cost of parts of internal high pressure forming remains high.
Summary of the invention
The technical problem to be solved in the present invention is to provide one does not need high-voltage power supply, and involutory die press, mould and hydraulic component performance requirement are not high, and integral device cost is low, the cavity low-internal-pressure manufacturing process of stable performance.
In order to solve the problems of the technologies described above, cavity low-internal-pressure manufacturing process of the present invention comprises the steps:
Step one: the upper die and lower die of shaping dies, upper clamping head and lower clamping head are put on matched moulds press, then cavity blank is put on the counterdie of shaping dies, controlling matched moulds press makes clamping head and lower clamping head go in the same direction, and is clamped at the two ends of cavity blank;
Step 2: the two ends of two seal heads being inserted respectively cavity blank, realize the sealing to cavity blank;
Step 3: by the flow-guiding channel of two seal heads to injection liquid body medium in cavity blank;
Step 4: the patrix controlling matched moulds press is descending to the pressurization of cavity blank, in pressure process, make the medium pressure liquid in cavity according to the technological requirement change of setting, until the profile of cavity blank and upper die and lower die is fitted, cavity part is shaped;
Step 5: extract two seal heads out, makes the liquid medium in cavity part discharge;
Step 6: control matched moulds press and make patrix, upper clamping head and lower clamping head backhaul, take out cavity part.
Described cavity part can be the cavity part of constancy of volume in pressure process, also can be the cavity part that in pressure process, volume reduces.
For the cavity part of constancy of volume in deformation process, liquid medium volume in pressure process remains unchanged; For the cavity part that volume in deformation process reduces, the pressure of liquid medium in cavity can be made according to the technological requirement change of setting by the method for overflow.
Described upper clamping head and lower clamping head and seal head end adopt tapered face fit structure, utilize two seal heads to apply pressure to the two ends of cavity blank in deformation process.
The present invention relates to a kind of cavity part forming process, first this method is full of liquid medium by cavity blank, cavity blank two ends seal, then matched moulds press and shaping dies is utilized to exert pressure to cavity blank, cavity blank then deforms, for the cavity part that volume in deformation process reduces, inside cavity volume has the trend diminished, in cavity, medium pressure liquid increases, by the method for overflow, the pressure in cavity is changed according to the technological requirement of setting, the part of required geomery is configured as gradually at the double action lower chamber blank of shaping dies and liquid medium.Advantage of the present invention is: in cavity part forming process, the pressure of internal liquid medium is passive foundation, and part is a kind of technical process of low interior pressing formation.Cavity part internal pressure is low, and require also lower to hydraulic component, equipment investment is few, and stable performance.This low interior pressing formation process efficiency of cavity part is close with internal high pressure forming process efficiency, so compared with internal high pressure forming technique, the cavity part manufacture technics cost of low interior pressing formation is low, have a extensive future.
Accompanying drawing explanation
Fig. 1 is the frock schematic diagram of cavity low-internal-pressure manufacturing process of the present invention.
Fig. 2 a, 2b are the schematic diagram before certain car trailing arm part press molding and after being shaped respectively.
Detailed description of the invention
For certain car trailing arm cavity part, cavity low-internal-pressure manufacturing process of the present invention is illustrated (see Fig. 1) below.As shown in Fig. 2 a, 2b, this cavity part material is carbon steel, cavity blank thickness t=2 ~ 5mm, materials in the tube diameter D=55 ~ 75mm.
Step one: the patrix 6 of shaping dies and counterdie 2, upper clamping head 4,8 and lower clamping head 3,7 are put on matched moulds press, then cavity blank 1 is put on the counterdie 2 of shaping dies, controlling matched moulds press makes clamping head 4,8 and lower clamping head 3,7 go in the same direction, and is clamped at the two ends of cavity blank 1;
Step 2: the two ends of two seal heads 5,9 being inserted respectively cavity blank 1, realize the sealing to cavity blank 1; Upper clamping head 4 and lower clamping head 3 adopt tapered face fit structure with the end of seal head 5; Upper clamping head 8 and lower clamping head 7 adopt tapered face fit structure with the end of seal head 9;
Step 3: by the flow-guiding channel 10 of seal head 5, the flow-guiding channel 11 of seal head 9 to injection liquid body medium in cavity blank 1 (liquid medium is hydraulic oil, also can be water type hydraulic fluid or synthesis type hydraulic fluid);
Step 4: the patrix 6 of control matched moulds press is descending to pressurize to cavity blank 1, the technological requirement by the method for overflow, the medium pressure liquid in cavity being set in pressure process changes, until cavity blank 1 is fitted with the profile of patrix 6, counterdie 2, cavity part is shaped; In cavity, medium pressure liquid can utilize control pressurer system of the prior art to control.
Step 5: extract two seal heads 5,9 out, makes the liquid medium in cavity part discharge;
Step 6: control matched moulds press and make patrix 6, upper clamping head 4,8 and lower clamping head 3,7 backhaul, take out cavity part.
For ensureing in forming process that cavity part is wrinkle resistant, not breaking, medium pressure liquid change in forming process in cavity should be obtained by computer Simulation calculation according to parameters such as part shape, material property and material thicknesses, and revise in process of the test, finally obtain stable technological requirement change curve.
By the pipe fitting that low interior pressing formation method of the present invention is shaped, part is shaped in pairs, cuts in the middle of after being shaped, and forming quality is good, and transition region shape is full, and termination rectangular dimension is stablized, and can reach drawing required precision.
Claims (3)
1. a cavity low-internal-pressure manufacturing process, is characterized in that comprising the steps:
Step one: the patrix (6) of shaping dies and counterdie (2), upper clamping head and lower clamping head are put on matched moulds press, then cavity blank (1) is put on the counterdie (2) of shaping dies, controlling matched moulds press makes clamping head and lower clamping head go in the same direction, and is clamped at the two ends of cavity blank (1);
Step 2: the two ends of two seal heads being inserted respectively cavity blank, realize the sealing to cavity blank (1);
Step 3: by the flow-guiding channel of two seal heads to the interior injection liquid body medium of cavity blank (1);
Step 4: the patrix (6) of control matched moulds press is descending to pressurize to cavity blank (1), in pressure process, make the medium pressure liquid in cavity according to the process curve change of setting, until cavity blank (1) is fitted with the profile of patrix (6), counterdie (2), cavity part is shaped;
Step 5: extract two seal heads out, makes the liquid medium in cavity part discharge;
Step 6: control matched moulds press and make patrix (6), upper clamping head and lower clamping head backhaul, take out cavity part.
2. cavity low-internal-pressure manufacturing process according to claim 1, is characterized in that the cavity part reduced for volume in deformation process, makes the pressure of liquid medium in cavity according to the process curve change of setting by the method for overflow.
3. cavity low-internal-pressure manufacturing process according to claim 1, is characterized in that described upper clamping head and lower clamping head and seal head end adopt tapered face fit structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310418901.8A CN103464562B (en) | 2013-09-14 | 2013-09-14 | Cavity low-internal-pressure manufacturing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310418901.8A CN103464562B (en) | 2013-09-14 | 2013-09-14 | Cavity low-internal-pressure manufacturing process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103464562A CN103464562A (en) | 2013-12-25 |
| CN103464562B true CN103464562B (en) | 2016-03-30 |
Family
ID=49789727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310418901.8A Active CN103464562B (en) | 2013-09-14 | 2013-09-14 | Cavity low-internal-pressure manufacturing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103464562B (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3134217B1 (en) * | 2014-04-21 | 2021-11-17 | Sumitomo Heavy Industries, Ltd. | Hydroforming apparatus |
| JP6401953B2 (en) * | 2014-07-15 | 2018-10-10 | 住友重機械工業株式会社 | Molding apparatus and molding method |
| CN105033014B (en) * | 2015-07-09 | 2017-02-01 | 杭州东霖染整机械有限公司 | Water pressure molding technology for large-radius barrel of dyeing machine |
| CN106311857B (en) * | 2015-12-21 | 2017-11-07 | 青岛世冠装备科技有限公司 | A kind of swollen manufacturing process of complex section hollow member low pressure upsetting |
| TWI609727B (en) * | 2016-06-17 | 2018-01-01 | 國立中山大學 | Method and apparatus for hydroforming |
| CN107052126A (en) * | 2017-04-17 | 2017-08-18 | 无锡朗贤汽车组件研发中心有限公司 | Fittings hydraulic formation equipment |
| CN107983819A (en) * | 2017-12-07 | 2018-05-04 | 宁波钜智自动化装备有限公司 | A kind of automobile torsion beam low pressure forming processes and its shaping dies |
| CN108326107B (en) * | 2017-12-31 | 2019-10-29 | 潍坊倍力汽车零部件有限公司 | Without liquid-filled shape tube hydraulic forming method and device |
| CN108817194B (en) * | 2018-04-28 | 2020-04-28 | 河南孟电集团兴迪锻压设备制造有限公司 | Hydraulic preparation method of multi-elbow pipe |
| CN109454145A (en) * | 2018-09-20 | 2019-03-12 | 南京理工大学 | A kind of thin-wall metal pipe hydroforming equipment and method based on vibration feed supplement |
| CN109158458B (en) * | 2018-09-29 | 2020-08-25 | 天津市天锻压力机有限公司 | Method for performing liquid-filled bending on pipe by using composite filling medium |
| CN110834047B (en) * | 2019-11-21 | 2020-12-29 | 大连理工大学 | Internal pressure forming method for large-size thin-wall pipe fitting gas-liquid mixed fluid |
| CN114425579B (en) * | 2022-01-27 | 2022-09-20 | 东北林业大学 | Shape correction device and method for enhancing mechanical property of material increase manufacturing hollow component |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63220929A (en) * | 1987-03-09 | 1988-09-14 | Mazda Motor Corp | Hydraulic bulge forming method for pipe |
| CN1233983A (en) * | 1996-08-26 | 1999-11-03 | 科西马国际公司 | Hydroforming die assembly and method for pinch-free tube forming |
| US6415638B1 (en) * | 1999-03-26 | 2002-07-09 | Nissan Motor Co., Ltd. | Method and device for forming tubular work into shaped hollow product by using tubular hydroforming |
| CN1575213A (en) * | 2001-10-24 | 2005-02-02 | 本田技研工业株式会社 | Process for forming tubular member |
| CN1792493A (en) * | 2005-12-19 | 2006-06-28 | 河南科技大学 | Method for forming magnesium alloy pipe fitting |
| CN101045247A (en) * | 2006-03-31 | 2007-10-03 | (株)星宇Hitech | Hydraulic forming press system and press method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3750521B2 (en) * | 2000-03-09 | 2006-03-01 | トヨタ自動車株式会社 | Method of manufacturing modified cross-section cylindrical body and axle beam for torsion beam |
| JP2012040604A (en) * | 2010-08-23 | 2012-03-01 | Katayama Kogyo Co Ltd | Method for manufacturing square pipe-like molded product |
-
2013
- 2013-09-14 CN CN201310418901.8A patent/CN103464562B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63220929A (en) * | 1987-03-09 | 1988-09-14 | Mazda Motor Corp | Hydraulic bulge forming method for pipe |
| CN1233983A (en) * | 1996-08-26 | 1999-11-03 | 科西马国际公司 | Hydroforming die assembly and method for pinch-free tube forming |
| US6415638B1 (en) * | 1999-03-26 | 2002-07-09 | Nissan Motor Co., Ltd. | Method and device for forming tubular work into shaped hollow product by using tubular hydroforming |
| CN1575213A (en) * | 2001-10-24 | 2005-02-02 | 本田技研工业株式会社 | Process for forming tubular member |
| CN1792493A (en) * | 2005-12-19 | 2006-06-28 | 河南科技大学 | Method for forming magnesium alloy pipe fitting |
| CN101045247A (en) * | 2006-03-31 | 2007-10-03 | (株)星宇Hitech | Hydraulic forming press system and press method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103464562A (en) | 2013-12-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103464562B (en) | Cavity low-internal-pressure manufacturing process | |
| CN106216481B (en) | A kind of big section difference odd-shaped cross section pipe fitting swelling pressure combined shaping method | |
| CN102764808B (en) | Hydraulic forming device and method of reducing cylindrical part | |
| CN105562516A (en) | Charging pressing forming method for variable-cross-section special-shaped pipe | |
| CN201189531Y (en) | Improved bulging hydraulic press | |
| CN101332480B (en) | Simple inside high-pressure forming method | |
| CN103272879B (en) | Upset-bulge compound internal high pressure forming method and device for long and thin deformed straight pipe | |
| CN105598265A (en) | Overall forming method of small-relative-bending-radius and large-diameter-thickness-ratio thin-walled bent pipe fitting | |
| CN104001781B (en) | The forming device of a kind of high accuracy hollow unit and method | |
| CN106311857B (en) | A kind of swollen manufacturing process of complex section hollow member low pressure upsetting | |
| CN104607526B (en) | Intra-pipe high pressure forming system | |
| CN105234242A (en) | In-pipe Rubber bladder hydraulic forming device | |
| CN103223434B (en) | A kind of device for pipe internal high pressure and method | |
| CN201201008Y (en) | Internal fluid infusion pressure boost type hydraulic expanding device for pipe material | |
| CN102240690B (en) | Extrusion molding technology of three-way pipe extrusion molding device | |
| CN102699175A (en) | Hydraulic forming process of large-section variable-diameter spout | |
| CN201295718Y (en) | Radial pressing and bulging device for pipes | |
| CN107052126A (en) | Fittings hydraulic formation equipment | |
| CN110976587A (en) | Forming method and device for continuous multi-wave pipe fitting with ultra-large section difference | |
| CN102921791B (en) | Section-variable hollow component forming device and method | |
| CN107350330A (en) | A kind of left-right asymmetry formula forming high pressure in pipe equipment | |
| CN103691796A (en) | Large internal high-pressure forming die | |
| CN204448967U (en) | A kind of pipe fitting internal high pressure forming device | |
| CN103691794A (en) | Self-pressurization forming method for hollow parts | |
| CN207222670U (en) | A kind of reducing abnormity pipe part expanding die |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |